Evidence map›Paper›PMID 34473739›Full record

ArticlePloS one2021

Changes in food pricing and availability on the Navajo Nation following a 2% tax on unhealthy foods: The Healthy Diné Nation Act of 2014.

Carmen George, Carolyn Bancroft, Shine Krystal Salt, Cameron S Curley, Caleigh Curley, Hendrik Dirk de Heer, Del Yazzie, Regina Eddie, Ramona Antone-Nez, Sonya Sunhi Shin

Abstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Article
  2. Comorbidities among American Indian and Alaska Native People with Cancer: A Surveillance, Epidemiology, and End Results-Medicare Study.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Carmen GeorgeBrigham and Women's Hospital, Boston, MA, United States of America.
Carolyn BancroftBrigham and Women's Hospital, Boston, MA, United States of America.
Shine Krystal SaltBrigham and Women's Hospital, Boston, MA, United States of America.
Cameron S CurleyBrigham and Women's Hospital, Boston, MA, United States of America.
Caleigh CurleyDepartment of Health Sciences, Northern Arizona University, Flagstaff, AZ, United States of America.
Hendrik Dirk de HeerDepartment of Health Sciences, Northern Arizona University, Flagstaff, AZ, United States of America.
Del YazzieNavajo Epidemiology Center, Window Rock, AZ, United States of America.
Regina EddieCollege of Nursing, Northern Arizona University, Flagstaff, AZ, United States of America.
Ramona Antone-NezNavajo Epidemiology Center, Window Rock, AZ, United States of America.
Sonya Sunhi ShinBrigham and Women's Hospital, Boston, MA, United States of America.ORCID 0000-0003-3466-9055

Funding

SSCIMA: Integrating Analysis of Socio-economic Sub-population Dynamics to Improve Spatial Models of Infectious DiseaseU54MD012388 · NIMHD · NORTHERN ARIZONA UNIVERSITY · PI Samantha Jane Sabo · 2017 to 2026
$49.7M
Impact of Navajo Nation Tax on Junk FoodR01MD013352 · NIMHD · NORTHERN ARIZONA UNIVERSITY · PI DE HEER, HENDRIK DIRK, SHIN, SONYA S · 2018 to 2021
$1.9M
NIMHD NIH HHS R01 MD013352NIMHD NIH HHS U54 MD012388
6 · The paper itself

Abstract

introductionIn 2014, the Navajo Nation Healthy Diné Nation Act (HDNA) was passed, combining a 2% tax on foods of 'minimal-to-no-nutritional value' and waiver of 5% sales tax on healthy foods, the first-ever such tax in the U.S. and globally among a sovereign tribal nation. The aim of this study was to measure changes in pricing and food availability in stores on the Navajo Nation following the implementation of the HDNA.

methodsStore observations were conducted in 2013 and 2019 using the Nutrition Environment Measurement Survey-Stores (NEMS-S) adapted for the Navajo Nation. Observations included store location, type, whether healthy foods or HDNA were promoted, and availability and pricing of fresh fruits and vegetables, canned items, beverages, water, snacks and traditional foods. Differences between 2013 and 2019 and by store type and location were tested.

resultsThe matched sample included 71 stores (51 in the Navajo Nation and 20 in border towns). In 2019, fresh produce was available in the majority of Navajo stores, with 71% selling at least 3 types of fruit and 65% selling at least 3 types of vegetables. Compared with border town convenience stores, Navajo convenience stores had greater availability of fresh vegetables and comparable availability of fresh fruit in 2019. The average cost per item of fresh fruit decreased by 13% in Navajo stores (from $0.88 to $0.76) and increased in border stores (from $0.63 to $0.73), resulting in comparable prices in Navajo and border stores in 2019. While more Navajo stores offered mutton, blue corn and wild plants in 2019 compared to 2013, these changes were not statistically significant. DISCUSSION: The findings suggest modest improvements in the Navajo store environment and high availability of fruits and vegetables. Navajo stores play an important role in the local food system and provide access to local, healthy foods for individuals living in this rural, tribal community.

Indexed as

American Indian or Alaska NativeBeveragesCosts and Cost AnalysisFood SupplyFruitGovernment RegulationHumansNutritional RequirementsNutrition SurveysNutritive ValueSnacksUnited StatesVegetables

Identifiers

PMID34473739
PMCPMC8412325

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.